Brine tank



Feb. 5, 1929.

H. A. GREENWALD Er A1.

BRINE TANK Filed Jan. 17, 1927 2 sneets-sneet 1 'lll/INN.

www W www Gttoznmo plante Feb. s, 1929.

' U`NITED.STTES 1,191,179 BATENT oFF-ICE.

autom) A. enEENwnLn AND man J. aannam, or nn'rnorr, MICHIGAN, saumonsy Y TO THOMASV C. WHITEHEAD, F DETROIT, MICHIGAN.

mmm 'rml Application led Ianuaryl?, 19.27. Serial No. 161,882.'

This invention relates generally to brine tanks for refrigerating-apparatus and consists of certain novel features of construction, combinations and arrangements of parts as wllbe more fully described and particularly pointed out in the appended claims.

In the accompanying drawings:

Figure l is a top plan view of a brine tank embodying our invention.

Figure 2 is a front elevation thereof with the cover for the inner casing removed. v

Figure 3 is a side elevation of the construction shown in Figures 1 and 2.

' Figure 4 is a vertical sectional View` taken on the line 4-4 of Figure 1.

Figure 5 is a horizontal ysectional view taken on the line 5--5 of Figure 2.r

Referring now to the drawings, respectivelyl are outer and inner casings of a brine tank embodying our invention.

shown, the outer casing 1 is preferably constructed of sheet metaland is imperforate except for a central opening I3 in the front wa114 thereof, anda pair of laterallyspaced openings 5 and 6 respectively in the top Wall 7 thereof. APreferably the top, bottom and side Walls 7 ,8, 9 and 10 respectively of the outer casing are formed of a single. vsheet of metal which is pressed to the desired shape and has a longitudinally extending seam 11 at the top thereof, While the front and rear walls 4 and 12 respectively of said casing are formed separatell and are rigidly secured at their edges tosai top, bottom and side walls 35 V7, 8, 9 and 10 respectively. Any suitable means such as interlocking flanges 13 and 14 respectively at the opposite ends of the casing 1 may-be used'to bind together the parts aforesaid of said casing.

The'inner casing 2 s also constructed of sheet metal and is preferably ,iinperforate except for an opening 15 at'the front end thereof. Preferably the top, bottom and side Walls 16, 17, 1.8 and 19 respectively of this casing 2 are formed of'a single sheet of metal,

While the rear end Wall 20 thereof is formed separatelystherefrom and is rigidly secured to said stop, bottom and side walls. Any

i suitable means such as theI interlocking 50, anges 22-and 23 respectively may be used to bind together the parts aforesaid of this inner casing. f

To provide an efficient construction, the

inner casing 2 is spaced from the rear, top,

bottom and side Walls 12, 7, f8, 9-and 10 -re- 1 and 2l spectively of the outer casing 1 and preferably extends through the central opening 3 in the front wall 4 of said 7outer caslng. As shown, this front wall 4 is provided around the opening 3 with a forwardly projecting marginal flange 24 that-embraces and is rigidi ly secured to the inner casing 2. Preferably this connection between the casings 1 and 2 comprises interlocking flanges 25 and 26 respectivel of said casings 1 and 2 that not only hol the inner casing 2 but'also provide4 "a fluid seal about the inner casing at the edges of the opening 3. Any suitable means such as the detachable cover 27 may be used to close the opening 3 at the front endl of the 33 respectively into a relatively large chamber 34, and a plurality of smaller chambers 35, 36, 37, 38', 39 and 40 respectively. Preferably the large chamber 34 receives the tray 28 andis located at the top of the inner casing, While the smaller chambers 35, 36, 37, 38,39 and 40 respectively receive the trays 29 and are arranged in two tiers below sald chamber 34.

With this construction the refrigerating medium, such asvmethyl chloride enters the outer casing l through a suitable fitting 41 in the opening 5, and after passing through y-twfo coils 42 and 43 respectively of tubing,

flows outwardly through a suitable fitting/44 in the opening 6. As shown, the coil 42 is tubular in form' and is located in the cham- 'ber 34, While the coil 43 is substantially inverted L-shape in form and is located-` between the inner and outer casings 2 and 1 respectively. Preferably the convolutions of the coil 42 are substantially rectangular shape and are disposed adjacent the walls of the chamber 34 so that said/6011 42 may receive the tra'y 28. The convolutions of the coil 43 are also L-shape iniform andare ar-` ranged With vthe vertical portions 45 thereof between the vertical walls 19 and 10 respectively of the inner and outer casings, and have the horizontal portions 46 thereof disposed between thehorizontal top walls 16 and 7 respectively of said inner and outer casngs.

lou p .los

As shown the convolutions at one end of the coil 42 'has an extension 47 that extends throughdhe wall18 and connects into the fitting 41, while the convolutions at the opposite end of the coil 42 has an extension 48 that extends through the wall 19 of the inner casing and connects into the adjacent end convolution of the vertical portion 45 of the L-shape coil 43. The convolution at the opposite end of the vert-ical portion 45 of the coil 43 is alsov provided with an extension 49 that extends upwardly to the outlet fitting 44.

Thus, from the foregoing description it will be readily apparent that we have provided a light and compactbrine tank that is neat and durable in construction, and that can be manufactured at a comparatively low cost. Due to the construction and location of thecoil 42 in the chamber 34 in the inner casing 2, and the provision of the closure 20 for the rear end of said inner casing 2 preventing the passage of air through the rear end of said casing, the contents of the receptacles 28 and 29 respectively, and especially the contents of the receptacle 28, will be frozen more readily. It will also be observed that the lower portions of the convolutions of the coil 42 are in thermal contact with the uppermost partition 30, and in addition to conducting heat from said partitions to therefrigerant within the' coil, said lower portions also serve as a seat or bearing for the receptacle 28. f

While it is believed that fromthe foregoing description, the nature and advantage of our invention will be readily apparent, we desire to have it understood that we do not limit ourselves to what is herein vshown and described and that such changes may be resorted to when desired as fall within the scope of what is claimed.

What we claim as our invention is:

1. In a brine tank, the combination with a casing containing Huid having a low freezing point, of a casing within the casing aforesaid having a plurality of chambers for receptacles for food, and expansion means in one of said chambers.

2. In a, brine tank, the combination with a casing containing a fluid having a low freezing point, of a casing within the Casin g aforesaid having a plurality of chambers for receptacles for food, a receptacle in one of said chambers, and an expansion coil in one of said chambers having convolutions surrounding said receptacle.

3. In a brine tank, the combination with a casing containing a fluid having a low freezing point, of a casing within the casing aforesaid having a plurality of chambers for receptacles for food, and an expansion coil in one of said chambers having portions thereof constituting .a seat or bearing for a receptacle.

4. In a brine tank, the combination with a casing containing a fluidhaving a low freezing point, of a casing within the casing afore-y vcasing containing a fluid having a low freezing point,`of a casing within the casing aforesaid, a partition in the second mentioned casing dividing' the lat-terinto a plurality of chambers in which receptacles for food may be placed, and expansion means in said second mentioned casing including an expansion coil located in one of said chambers and having a portion thereof in thermal contact with said partition, said expansion coil being constructed so'as to receive a receptacle within the convolutions thereof.

6. A brine tank having an outer casing that is imperforate except for an opening in the front wall thereof and Suitable inlet and outlet openings for a refrigerant, a casing within the first mentioned casing and extending outwardly through the opening in the front wall thereof, a fil-,ange projecting outwardly from the edges of the opening `in the rst mentioned casing and embracing and secured to the second mentioned casing,

the second mentioned casing being imperforate except for an opening at the outer projecting end thereof and being provided with chambers for receiving receptacles for food, and a removable closure for the opening in the outer projecting end of the second mentioned casing adapted to be supported by the aforesaid flange.

7. In a brine tank, the combination with a casing containing a fluid having a low freezing point, a second casing `within the first mentioned casing having chambers for receiving receptacles for'ifood, an expansion coil located between the inner and outer casings, and an expansion coil in one of the chambers of the second mentioned casing.

8. In a brine tank, the combination with a casing containing a fiuid having a low freezing point, a second casing in the first mentioned casing having chambers in which receptacles for food may be placed, inlet and outlet fittings for a refrigerant carried by the first mentioned casing, an expansion coil within one of the chambers of the second mentioned casing, an expansion coil between the first and second mentioned casings, a connection between the inlet fitting and the first mentioned coil, a connection between the i first mentioned coil and the second mentioned coil, and a connection between the second mentioned coil and the outlet fitting aforesaid.

9. In a brine tank, the combination with a casing containing a uid having a low freezinor point, a casing within the casing aforesaid having chambers for receiving receptacles for food, inlet and outlet fittings for a refrigerant carried by the first mentioned casin a tubular expansion coil in one of the cham rs in the second mentioned casing, a substantially L-shaped expansion coil between the inner and outer caslngs, a connection between the first and second mentioned expansion coils, and connections between said coils and said fittings.

10. A brine tank having a. casing that is iinperforate except for anopening in one wall thereof and inlet and outlet openings casing l the outer end thereof, and a removable closure for the opening at the outer end of the -second mentioned casing and adapted to be supported upon the joint formed by the connection of the first mentioned casing with the second mentioned casing.

In testimony whereof we ax our signatures.

HAROLD A. GREENWALD. FRED J. HEIDEMAN. 

